Temporary binder.



BEST AVAILABLF COPY No. ?96,759. 'PATENTED AUG. 8. 1905. E. C. PHILLIPS J. C. DUNLOP.

TEMPORARY BINDER. APPLIGATION PILED IULY27.1904.

BEST AVAILABVLE COPY' UNITED STATES PATENT OFFICE.

ELW'OOD C. PHILLIPS AND JAhiES (J. DUNUJP, OF GHICAGO, ILLINOIS.

TEMPORARY BINDER.

Specification of Letters Patent.

Patented Aug. 8, 1905.

Application filed July 27, 1904.' Serial No. 218374,

To all whom, it may conccrn:

Be it known that we, ELWOOD C. PnILmPs and JAMES C. DUNLOP, citizens of the United States, residing in Chicago, in the County of Cook and State of Illinois, have invented certain new and useful Improvements in Temporary Binders, of which the following is a specification.

This invention relates to improvements in temporary binders; and it has for its salient objects to provide a binder of the oscillating impaling-prong variety of extremely compact and simple construction; to provide a construction in which the actuation of the prongs is accompl'shed by means of a shiftable bar, the Construction and arrangement of the parts .ieing such that the movement of the parts is characterized by great freedom and convenience; to provide a Construction in which the closing and looking the prongs in closed position is positive, while the reverse or opening of the prongs is accomplished by springs;

to provide a Construction which lends itself to ready attachment to the ordinary fiexible back of a price-book' or the like, and in general to provide a simple and improved construction of the character referred to.

To the above ends theinvention consists in the matters hereinafter described, and more particularly pointed out in the appended claims.

The invention will be readily understood from the following description, reference being had to the accompanying drawings, in which- Figu'e 1 is an inside face View looking between the edges of the cover members of a binder constituting a preferred embodiment of the invention. Fig. 2 is a cross-sectional view taken in a plane adjacent to one of the pairs of prongs and showing the parts of the binder in open position. Fig. 3 is a longitudinal sectional view taken approximately on line 3 3 of Fig. 1 and looking in the direction of the arrows. Fig. 4 is a cross-sectional view taken on the indirect line 4: 4 of Fig. 3 and looking in the direction of the arrows.

Referring to the drawings, 1 designates as a whole a base-plate which i's desirably made of flat strap-like form and Conveniently provided a't its lateral margins with integral prongs 2, adapted to be inserted through, bent over, and clenched upon the inner attachingstrip of the cover, as indicated at 3. Upon the inner face of the base-plate are mounted a plurality of brackets 4:, said brackets beingconveniently formed of stampings having right-angle base-fiange portions 5, which are riveted to the face of the base-plate, as indicated at 6. Upon each bracket is mounted a pair of curvcd oscillatory impaling-prongs, as 7 8, these prongs being substantially counterparts of each other, except that the meeting ends are preferably constructed to interfit, one prong being to this end pointed and the other rccessed, as indicated at 9. The members of each pair of prongs are pivoted upon their bracket so as to oscillate in the same plane, the pivots being located at a substantial distance apart, as indicated at 10, and the lower or inner ends of the prongs being extended beyond the pivot-points and forming cam projections ll.

12 designates as a whole an actuating-bar which is Conveniently formed of rod metal and is Inounted to reciprocate through alined" aperturcs 13, formed through therespectve brackets 4:. At points in register with each of the several pairs of cam projections 11 of the prongs said actuating-bar is provided with inclined cam-surfaces 14:, the several cam-sur faces being ahkc and inclned n the same direction. These cam surfaces are conven ientl y formed by notching the under side eftlie bar, and the depth of the notches and the in- 1 clination of the cam-faces are such that whenl the cani projections of the prongs engage the dcepest parts of the notches the prongs ar permitted to open to a substantial extent, ay' indicated in Fig. 2, while when the actuatin bar is shifted to carry the cam-surfaces 'there of out of register with the cam projections the prongs will be held tightly closed by engagement with the unnotched under surface of the bar.

In order to automatically open the prongs as the bar is shifted in the direction to perupon each pair of prongs.

faces of the cam projections.

In order that the actuating-bar may not be accidentally shifted, so as to permit the prongs to open, a frictional detent is provided, said detent Conveniently taking the form of a boss 16, struck up upon the base-plate and located. in position to coperate with a button or head 17, Secured upon the end of the actuating-bar.

The height of the boss 16 is slight and the re- 

